Serveur ne demarre plus

[19:40:46] [Server thread/INFO]: Loading properties
[19:40:46] [Server thread/INFO]: Default game type: SURVIVAL
[19:40:46] [Server thread/INFO]: Generating keypair
[19:40:46] [Server thread/INFO]: Starting Minecraft server on *:29852
[19:40:47] [Server thread/INFO]: This server is running CraftBukkit version git-Bukkit-1.7.2-R0.1-1-gd791c11-b2970jnks (MC: 1.7.2) (Implementing API version 1.7.2-R0.2-SNAPSHOT)
[19:40:47] [Thread-7/INFO]: ----- Bukkit Auto Updater -----
[19:40:47] [Thread-7/INFO]: It appears that you’re running a Development Build, when you’ve specified in bukkit.yml that you prefer to run Recommended Builds.
[19:40:47] [Thread-7/INFO]: If you would like to be kept informed about new Development Build releases, it is recommended that you change ‘preferred-channel’ in your bukkit.yml to ‘dev’.
[19:40:47] [Thread-7/INFO]: With that set, you will be told whenever a new version is available for download, so that you can always keep up to date and secure with the latest fixes.
[19:40:47] [Thread-7/INFO]: If you would like to disable this warning, simply set ‘suggest-channels’ to false in bukkit.yml.
[19:40:47] [Thread-7/INFO]: ----- ------------------- -----

Ce sont les seuls logs du démarrage ?